BIO 370 (Animal Physiology) - Exam
One well answered already passed
negative feedback - correct answer ✔✔ Seawater fish have lower osmolarity that the seawater.
By passive diffusion, salt enters into the fish through their gills as they swim, increasing their
internal body osmolarity, this change is counteracted in the fish by excreting more salt through
their urine output, through the skin and gills. The excretion of increased salt as a response to
increasing body osmolarity is an example of:
b) body temperature is homeostatically controlled - correct answer ✔✔ You measure your body
temperature and get a reading of 98.7F while you are sitting outside on a pool deck on a hot
summer day where the temperature is 88F. Your body temperature measures 98.6F after you
have jumped in the pool with a water temperature of 80F. Several months later your body
temperature measures 98.5F while outside on a winter day where the temperature is 45F. These
observations of body temperature are an example that demonstrates that:
a) Body temperature is acclimating to the environment
b) Body temperature is homeostatically controlled
c) Evolution by natural selection
d) Optimal body temperature for all living organisms is ~98.6F
b) in this experiment, dogs acclimate to 85F environment by increasing their panting - correct
answer ✔✔ You have always wondered how dogs can withstand the heat of a summer day with
their thick furry coats. You make the observation that your friends dog pants a lot when in you
went with your friend and their dog (Doggo) for a walk in hot weather, later after you return to
your friend's apartment, you notice that Doggo's panting has decreased. You decide to perform
an experiment, where you observe the amount of time 10 dogs pant in a climate controlled
setting of 74F, and then increase the temperature to 85F, and measure the amount of time dogs
, pant. You observe that on average dogs spend more time panting at 85F than at 74F. Which is a
good hypothesis?
a) In this experiment, dog acclimatize to the 85F environment by increasing panting
b) In this experiment, dogs acclimate to the 85F environment by increasing their panting
c) In this experiment, dogs adapt to the 85F environment by increasing panting.
a) the new drug has a larger partition coefficient than the old drug - correct answer ✔✔ You are
testing a promising new drug that will replace another drug because this new drug acts faster to
relieve symptoms. You and your research team think that the reason why the old drug takes a
longer time to act is because it is a partially charged molecule. The new potential drug has the
same molecular weight but is uncharged. What is the correct statement about the partition
coefficient of these two drugs, old and new?
a) The new drug has a larger partition coefficient than the old drug
b) There is not enough information given to predict to compare the two partition coefficient
c) The new and the old drug have the same partition coefficient (they are the same molecular
weight)
d) The old drug has a larger partition coefficient than the new drug
a) the membrane permeability constant, P, of the new drug is greater than the old drug - correct
answer ✔✔ What would be your prediction for the membrane permeability of the new drug vs
the old drug and why? (The old drug has a larger partition coefficient than the new drug)
a) The membrane permeability constant P, of the new drug is greater than the old drug.
b) Because the two drugs are the same (molecular) size, their membrane permeability is the
equal.
c) The membrane permeability constant P, of the new drug is lower than the old drug.
One well answered already passed
negative feedback - correct answer ✔✔ Seawater fish have lower osmolarity that the seawater.
By passive diffusion, salt enters into the fish through their gills as they swim, increasing their
internal body osmolarity, this change is counteracted in the fish by excreting more salt through
their urine output, through the skin and gills. The excretion of increased salt as a response to
increasing body osmolarity is an example of:
b) body temperature is homeostatically controlled - correct answer ✔✔ You measure your body
temperature and get a reading of 98.7F while you are sitting outside on a pool deck on a hot
summer day where the temperature is 88F. Your body temperature measures 98.6F after you
have jumped in the pool with a water temperature of 80F. Several months later your body
temperature measures 98.5F while outside on a winter day where the temperature is 45F. These
observations of body temperature are an example that demonstrates that:
a) Body temperature is acclimating to the environment
b) Body temperature is homeostatically controlled
c) Evolution by natural selection
d) Optimal body temperature for all living organisms is ~98.6F
b) in this experiment, dogs acclimate to 85F environment by increasing their panting - correct
answer ✔✔ You have always wondered how dogs can withstand the heat of a summer day with
their thick furry coats. You make the observation that your friends dog pants a lot when in you
went with your friend and their dog (Doggo) for a walk in hot weather, later after you return to
your friend's apartment, you notice that Doggo's panting has decreased. You decide to perform
an experiment, where you observe the amount of time 10 dogs pant in a climate controlled
setting of 74F, and then increase the temperature to 85F, and measure the amount of time dogs
, pant. You observe that on average dogs spend more time panting at 85F than at 74F. Which is a
good hypothesis?
a) In this experiment, dog acclimatize to the 85F environment by increasing panting
b) In this experiment, dogs acclimate to the 85F environment by increasing their panting
c) In this experiment, dogs adapt to the 85F environment by increasing panting.
a) the new drug has a larger partition coefficient than the old drug - correct answer ✔✔ You are
testing a promising new drug that will replace another drug because this new drug acts faster to
relieve symptoms. You and your research team think that the reason why the old drug takes a
longer time to act is because it is a partially charged molecule. The new potential drug has the
same molecular weight but is uncharged. What is the correct statement about the partition
coefficient of these two drugs, old and new?
a) The new drug has a larger partition coefficient than the old drug
b) There is not enough information given to predict to compare the two partition coefficient
c) The new and the old drug have the same partition coefficient (they are the same molecular
weight)
d) The old drug has a larger partition coefficient than the new drug
a) the membrane permeability constant, P, of the new drug is greater than the old drug - correct
answer ✔✔ What would be your prediction for the membrane permeability of the new drug vs
the old drug and why? (The old drug has a larger partition coefficient than the new drug)
a) The membrane permeability constant P, of the new drug is greater than the old drug.
b) Because the two drugs are the same (molecular) size, their membrane permeability is the
equal.
c) The membrane permeability constant P, of the new drug is lower than the old drug.
